Ladders, stepladders and climbing aids enable safe and ergonomic access to higher working areas or hard-to-reach places in industrial applications such as maintenance, servicing, warehouse logistics or production. The designs comply with applicable safety requirements in accordance with DIN and EN standards. Corrosion-resistant materials with a high load-bearing capacity and low dead weight are used. Height-adjustable or foldable versions allow flexible adaptation to different operating conditions and facilitate transportation and space-saving storage.